Datasheet

ADCS7476, ADCS7477, ADCS7478
www.ti.com SNAS192F –APRIL 2003–REVISED MARCH 2013
ADCS7476/ADCS7477/ADCS7478 Specifications
(1)
ADCS7477 Converter Electrical
Characteristics (continued)
The following specifications apply for V
DD
= +2.7V to 5.25V, f
SCLK
= 20 MHz, f
SAMPLE
= 1 MSPS unless otherwise noted.
Boldface limits apply for T
A
= −40°C to +85°C: all other limits T
A
= 25°C, unless otherwise noted.
Symbol Parameter Conditions Typical Limits Units
Resolution with No Missing Codes 10 Bits
INL Integral Non-Linearity ±0.2 ±0.7 LSB (max)
+0.3 LSB (max)
DNL Differential Non-Linearity ±0.7
-0.2 LSB (min)
V
OFF
Offset Error ±0.1 ±0.7 LSB (max)
GE Gain Error ±0.2 ±1 LSB (max)
DYNAMIC CONVERTER CHARACTERISTICS
SINAD Signal-to-Noise Plus Distortion Ratio f
IN
= 100 kHz 61.7 61 dBFS (min)
SNR Signal-to-Noise Ratio f
IN
= 100 kHz 62 dB
THD Total Harmonic Distortion f
IN
= 100 kHz -77 -73 dB (max)
SFDR Spurious-Free Dynamic Range f
IN
= 100 kHz 78 74 dB (min)
Intermodulation Distortion, Second Order
f
a
= 103.5 kHz, f
b
= 113.5 kHz -78 dB
Terms
IMD
Intermodulation Distortion, Third Order
f
a
= 103.5 kHz, f
b
= 113.5 kHz -78 dB
Terms
+5V Supply 11 MHz
FPBW -3 dB Full Power Bandwidth
+3V Supply 8 MHz
POWER SUPPLY CHARACTERISTICS
2.7 V (min)
V
DD
Supply Voltage
5.25 V (max)
V
DD
= +4.75V to +5.25V,
2 mA
SCLK On or Off
Normal Mode (Static)
V
DD
= +2.7V to +3.6V,
1 mA
SCLK On or Off
V
DD
= +4.75V to +5.25V,
2.0 3.5 mA (max)
I
DD
f
SAMPLE
= 1 MSPS
Normal Mode (Operational)
V
DD
= +2.7V to +3.6V,
0.6 1.6 mA (max)
f
SAMPLE
= 1 MSPS
V
DD
= +5V, SCLK Off 0.5 µA (max)
Shutdown Mode
V
DD
= +5V, SCLK On 60 µA (max)
V
DD
= +5V, f
SAMPLE
= 1 MSPS 10 17.5 mW (max)
Power Consumption, Normal Mode
(Operational)
V
DD
= +3V, f
SAMPLE
= 1 MSPS 2 4.8 mW (max)
P
D
V
DD
= +5V, SCLK Off 2.5 µW (max)
Power Consumption, Shutdown Mode
V
DD
= +3V, SCLK Off 1.5 µW (max)
ANALOG INPUT CHARACTERISTICS
V
IN
Input Range 0 to V
DD
V
I
DCL
DC Leakage Current ±1 µA (max)
C
INA
Analog Input Capacitance 30 pF
DIGITAL INPUT CHARACTERISTICS
V
IH
Input High Voltage 2.4 V (min)
V
DD
= +5V 0.8 V (max)
V
IL
Input Low Voltage
V
DD
= +3V 0.4 V (max)
I
IN
Input Current V
IN
= 0V or V
DD
±10 nA ±1 µA (max)
C
IND
Digital Input Capacitance 2 4 pF (max)
DIGITAL OUTPUT CHARACTERISTICS
I
SOURCE
= 200 µA,
V
OH
Output High Voltage V
DD
−0.2 V (min)
V
DD
= +2.7V to +5.25V
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